Abstract Understanding spatter and melt pool dynamics during laser drilling remains a topic of considerable importance to determine the quality of processed materials. Due to metallic materials’ opacity to visible radiation, we studied the spatter dynamics outside of holes during laser drilling using shadow mapping. A 2D transient model for simulating laser material processing was implemented using COMSOL commercial Multiphysics software and the spatter phenomena and melt pool dynamics were assessed. The results can be used as a basis to explain the different processes involved in the material properties during laser processing, which is a powerful tool to understand spatter’ formation mechanism and provide theoretical references for optimizing processing parameters.

中文翻译：

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毫秒激光金属钻孔过程中飞溅和熔池动力学的物理研究

摘要 了解激光钻孔过程中的飞溅和熔池动力学仍然是确定加工材料质量的一个相当重要的话题。由于金属材料对可见辐射的不透明性，我们使用阴影映射研究了激光钻孔过程中孔外的飞溅动力学。使用 COMSOL 商用 Multiphysics 软件实现了用于模拟激光材料加工的二维瞬态模型，并对飞溅现象和熔池动力学进行了评估。研究结果可作为解释激光加工过程中材料特性所涉及的不同过程的基础，是了解飞溅形成机制的有力工具，为优化加工参数提供理论参考。